Not ready to add people to your watercolor landscapes? Instead of going for the full details, practice making silhouette shapes of people. A tiny little silhouette of a person can add a little life to your landscapes.
Start by making a simple practice background. I chose a sunset on the beach. When the background is completely dry, add the people. Don't forget about scale and depth. People far off in the distance will be smaller than those closer to the viewer.
Create your people in a variety of stances, different poses. Make some people standing still. Some can be walking. Pair an adult with a child. Give them a simple activity. Here I had two of the people flying kites. Ladies can wear skirts.
Practice and have fun with it. When you get the hang of it, don't be afraid to add a little silhouette of a person to one of your landscapes.